This is one of the most beautiful pieces of music I have ever heard. Its a graduale from the Feast of Corpus Christi chanted at São Paulo's Saint Benedict Monastery.
I didn't wish to merely put up the audio, so I included a few pictures I've grabbed over the months from different sites. Many, of course, came from the wonderful Hallowed Ground.
The words and music can be found here.
Consider it inoculation against this.
Also, go read my wonderful wife's thoughts on our first Corpus Christi procession. I had planned on writing something but it would pale in comparison to her beautiful words.